Power-plane.



J. G. oseoon & F. w. BACHMAN.

I POWER PLANE. APPLICATION FILED OCT-'12, I914- RENEWED JULY 15, l'9l5-1 72,828. Patented Feb. 22, 1916.

Wit/basses UNrrED s'ra'rns PATENT @FFKQE.

JOSEPH G. OSGOOD AND FRANK W.;IBACHMAN, OF CINCINNATI, OHIO, ASSIGNORSTo SAID OSGOOD, TRUSTEE.

POWER-PLANE.

Specification of Letters Patent.

Patented Feb. 22, 1916.

Application filed October 12, 1914, Serial No. 866,394. Renewed July 15,1915. Serial No. 40,123.

To all whom it may concern:

Be it known that we, JOSEPH G. Oscoon and FRANK W. BACHMAN, bothcitizens of the United States, both residing at the city of Cincinnati,in the countyof Hamilton and State of Ohio, have invented certain newand useful Improvements in Power- Planes, of which the following is aspecification. Y

- Our invention belongs to that class of power planes which are handoperated.

One man canfoperate the plane efficiently and do the work accurately andeffectively. Our invention is cheap of manufacture,

simple in construction and highly eflicient. vin use, and it consistsessentially in a base plate or supporting bed, carrying a cutter,

a motor, adjusting means for the cutter,

- and connecting parts, and handles.

can be cut with any mrdinary cutter as shown in the plane, an endwisemaple block would need a rasp or toothed bar, and still other woods,other forms of cutters.

The cutters we employ are preferably circular or cylindrical in contourand are made with blades, burs, rasping surfaces or the, equivalentsthereof, so that the surface operated upon is cut or rasped off leavinga uniform and smooth surface.

In the accompanying drawing forming part of this specification,Figure 1. is a plan view of our new plane, Fig. 2, is a side view of oneside of the plane, Fig. 3, is a longitudinal section of the plane, takenat line 3-3 of Fig. 1; Fig. 4, is a side view of the plane, being theopposite side to the.

one shown in Fig. 2, and Fig. 5, is a de tached-partly sectioned, brokenaway view of details for raising and lowering the cutter, on line 5-5Fig. 1.

The bed plate or base of the plane is preferably 'made of a castinghaving a bottom 1 and sides 2-2, the bottom having a slot 3. This bedplate may be made .of any material and be of any desirable shape orcontour. On the bottom 1, we connect atpoints 4 (see Fig. 3), a motor 5of any approved form or construction. Power can be transmitted to themotor in any of the ordinary ways, as 'through electric wlres, notshown; any other motive power may, however, be ,used to operate themotor. The motor 5 has a shaft 6, at one end of which is carried a gearwheel 7, which meshes with a large gear 8 on shaft 10, which in turnmeshes with a gear 9, on shaft 12, at one end of the cutter 13. Thecutter 13 is, at each side, formed into a short shaft like end 12.. Thecutter works in the slot 3 in the plane bottom and can be lowered orraised to make cuts of varying depths on the surface on which it isoperatmg.

We Will now describe the mechanism for raising-and lowering the cutterto enable it to make cuts of varying depths? Weprovide a yoke 15carrying at each side at its ends an eccentric bushing or journal 16,keyed thereto by key 17. The eccentric bushes 16 are supported orjournaled in boxing 18 of any suitable form and the shaft 12 of cutter13 is eccentrically journaled in the bushings 16. In the bottom 1, atpoint 20 we rigidly connect a" screw 21. On the 'yoke 15 we provideshort rearwardly extending arms 22-22.

A thumb nut 23 works up and down on the screw 21. This nut 23 has acircular slot or groove 19 into which the pins 24-24 extend, sothat'when the nut 23 is screwed down, the pins willmove down with the saidnut 23 and when the nut is screwed up, the pins will move up with saidnut, thus lowering or raising the nut 23, also lowers or raises the pins24-24 with it and the pins being connected to the arms 22-22 lower orraise them, and they being made integral with the yoke 15, which at itsextended ends carries the eccentric bushings 16, turns said bushings inthe journal boxes 18, thus also carrying the cutter 13, which isjournaled in said bushings, around with said eccentric bushings, thusvarying the eccentric point, where shaft 12 is journaled in said bushes,away from or toward the slot 3 in thebed plate 1 and. consequentlybrings the cutter 13 away from or farther down in the said slot to makea cut of less ;or greater depth. At

the front of the frame we provide standards tance, We-provide a handle28, which weconnect to the motor casing in any approved way, (see Fig.4).

The knives on the cutter are marked 30. These knives may be of any formor size and arranged around the cutter 13 in any desirable manner. Wemay use a rasp, a burred bar or sanding tool in place of cutter 13, andmay use it for any kind of work, cutters of varying contour; beingemployed) for diflerent kinds of work for which they 20 are best fitted.

What we claim as new and our invention and desire to secure by LettersPatent is:

'In a plane of the character described, a

bed plate provided with a slot and with outer side walls, a circularcutter operating in. said slot, a yoke provided at each side withbushings journaled in saidwalls over said slot, the circular cutterbeing journaled eccentrically in the said bushings between their axisand said slot, and means connected with the yoke for oscillating thesaid bush- I ings, carrying the circular cutter with them,

to raise and lower the latter.

Executed at Cincinnati, Hamilton county,

day of October, 1914.

JOSEPH G. OSGOOD. I V FRANK W. BACHMAN.

Witnesses:

L. M. DUNLAP,

JOHN W. STREHLI.

Ohio, this 9th

